Home / 20,025.56-30,018.72-11,145.12

Finding the Fourth Proportional to 20,025.56, 30,018.72 and 11,145.12

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Solution

The fourth proportional to 20,025.56, 30,018.72 and 11,145.12 is: 16,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,025.56 : 30,018.72 = 11,145.12 : x
  2. Step 2: Convert to fraction form
    20,025.56/30,018.72 = 11,145.12/x
  3. Step 3: Cross multiply
    20,025.56x = 30,018.72 × 11,145.12
  4. Step 4: Simplify right side
    20,025.56x = 334,562,236.65
  5. Step 5: Solve for x
    x = 334,562,236.65/20,025.56
  6. Step 6: Final answer
    x = 16,706.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.